Opioid use disorder is a chronic brain disease characterized by continuing opioid use despite harmful consequences. Learn about symptoms and treatment.
Long COVID refers to new or recurring symptoms that occur four or more weeks after an infection with SARS-CoV-2, the virus that causes COVID-19.
Coronavirus is a term describes a family of viruses, common in both animals and humans.
COVID-19 is the disease caused by the SARS-CoV-2, the 2019 novel coronavirus.
A disease caused by infection with the monkeypox virus that causes rash and flu-like symptoms.
Vaccines activate the immune system, training it to fight off certain viral and bacterial infections.